On April 10, 2020, the Department of Defense selected General Atomics as a third prime contractor to join previously selected prime contractors Lockheed Martin, and nLight/Nutronics in building high energy lasers for the High Energy Laser Scaling Initiative (HELSI). Each developer will produce a 300 kW class high energy laser (HEL) source prototype with an architecture scalable to 500 kW or beyond, using a unique technology approach. The focus is on common, multi-Service/Agency needs for HEL (high energy laser) improvements.